class Calculator 
{ 
	int addition(int i, int j)
	{
		return i + j ; 
	} 
	float addition(float i, float j) 
	{
		return i + j ; 
	}
	double addition(double i, double j)
	{
		return i + j ; 
	}
	double areaOfRectangle(double height, double width) 
	{ 
		return height * width; 
	} 
	double areaOfCircle(double radius)
	{ 
		return (3.141*radius * radius);
	} 
 }
 class AddOperation 
 { 
	public static void main(String args[]) 
	{ 
		calculator cObj = new calculator(); 
		System.out.println(cObj.addition(1,2));
		System.out.println(cObj.addition(3.5,6.5));
		System.out.println(cObj.addition(1.567,2.676)); 
		System.out.println(cObj.areaOfRectangle(12.54,15.45));
		System.out.println(cObj.areaOfCircle(22.5)); 
	} 
 } 
